2. The microphone's curved relective surface, which houses the diaphragm is designed to diffuse undesirable sound waves (noise) by sending the sound waves in different directions. This apparatus supports the Cardioid Polar Pattern. See figure #1

3. Corrosive Resistant

4. Five vent holes in the cap accommodates the air movement from the diaphragm.

5. The Moon Mic’s interior back wall has a spherical shape. A
spherical shape has only one dimension and thus having a very strong resonant frequency capability. The 8''dirphargm is placed at the mouth of the cavity, this works very well together. A spherical cabinet is capable of delivering an almost perfect frequency response. See figure #2 (a)